One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(6,9)(10,12)(21,22,26,27)(23,24,29,32)(25,28,34,35)(30,31,36,33)(13,14,17,20)(15,18,16,19)(22,27)(23,29)(28,35)(30,36)(1,2,4,3)(13,14)(15,18)(16,19)(17,20)(21,23)(22,24)(25,30)(26,29)(27,32)(28,31)(33,35)(34,36)(5,6)(7,10)(8,9)(11,12)(13,15,17,16)(14,18,20,19)(21,24)(22,23)(25,33)(26,32)(27,29)(28,36)(30,35)(31,34)(1,3,4,2)(5,7,8,11)(6,10,9,12)(13,16,17,15)(14,19,20,18)(21,25)(22,28)(23,30)(24,31)(26,34)(27,35)(29,36)(32,33)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.